intel video driver problem

[Larry Gingras]

On 15.06.2010 22:57, Andriy Gapon wrote:
> on 14/06/2010 21:31 Brandon Gooch said the following:
>    
>> On Mon, Jun 14, 2010 at 12:26 PM, Larry Gingras<larry at cybent.net>  wrote:
>>      
>>> I have a problem with acceleration features on my graphic adapter.
>>> I have (according to Xorg.0.log) Integrated Graphics Chipset: Intel(R) 965GM
>>> (it is ASUS laptop X80L).
>>> When acceleration is enabled, some parts of windows sometimes became
>>> garbled. It seems like parts of video memory is littered. Image is only
>>> restored when affected regions is completely redrawn, minimize-restore of
>>> window do not restore garbled region (but image inside garbled region become
>>> different, it become part of desktop or something like that).
>>> I tried to disable everything that use acceleration (disable composition in
>>> KDE, etc), even disable DRI but if acceleration is enabled in xorg.conf this
>>> bug remains. If I disable acceleration (with Option "Accel" "off") -
>>> everything works fine.
>>> I tried to play with various options in xorg.conf but there are not many
>>> options to play with. Driver just ignores a lot of options (such as
>>> VideoRam). I tried change AccelMethod, but only EXA works for me (XAA and
>>> UXA make Xorg halt on starting graphic mode, I just have blank black screen
>>> and everything stop, I cannot switch back to console or kill X server).
>>> Only completely disabling acceleration make things better.
>>> I use FreeBSD 8.0-RELEASE, xorg 7.4, and intel video driver 2.7.1 (it is
>>> latest version currently present in ports).
>>> I'm not sure it is bug in xorg driver or in kernel support (i915 and drm
>>> modules, btw I mention these are not loaded if acceleration is disabled).
>>> It seems to me that it is some sort of memory allocation or access issue.
>>>
>>> Please advice possible solutions.
>>>
>>> BTW I think driver is severely outdated now. intellinuxgraphics.org have
>>> 2.11.0 now. I tried to download it but I cannot build it (I think it is for
>>> linux only and must be ported to FreeBSD).
>>>        
>> I believe Xorg 7.5 is available via ports, perhaps upgrading to the
>> most recent version of both Xorg and the Intel driver (2.7.1_3) will
>> remedy some of your issues.
>>      
> I don't think that it will help.
>
>    
>> I will say that the overall quality of open-source Intel graphics
>> drivers are highly fluctuating it seems.
>>
>> However, the Xorg setup on my Intel-equipped machines is running well,
>> although I don't require extraordinary power. The FreeBSD "team"
>> working on Xorg is rather short-handed, and can't be expected to keep
>> up with the most current developments of either Xorg or the
>> constituent pieces (like the Intel driver). Volunteers are always
>> welcome...
>>      
> Main problem is that Intel X drivers team took very Linux-centric world view.
> Their newer drivers require certain things in kernel that are not available in
> FreeBSD, that's why we can't update the driver to any newer version.
> To add to what you said, currently _nobody_ actively works on kernel side of X
> support.
>    
It is really sad. If it were desktop PC I could just change video 
adapter to something more FreeBSD-friendly (I think nvidia is the best 
choice for FreeBSD, am I right?), but it is not possible for laptop.